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1231 posts

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  Reply # 872842 6-Aug-2013 20:14
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It would be good to sticky some info on DLM for everyone because the same questions come up again and again.

I started on DLM6 and got to DLM1 in a bit over 2 weeks.

During that time there was VERY little change in sync rate therefore speed.

The one thing that did change was the latency but only jumping from DLM2 to DLM1

The fact is that DLM will not dramatically improve your speed, but on DLM1 could improve your latency which offers some benefits for TCP.

If your speeds are slow on VDSL DLM is not your saviour - moving your house closer to the exchange/cabinet will however likely help.

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  Reply # 872878 6-Aug-2013 20:43
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nitrotech: It would be good to sticky some info on DLM for everyone because the same questions come up again and again.

I started on DLM6 and got to DLM1 in a bit over 2 weeks.

During that time there was VERY little change in sync rate therefore speed.

The one thing that did change was the latency but only jumping from DLM2 to DLM1

The fact is that DLM will not dramatically improve your speed, but on DLM1 could improve your latency which offers some benefits for TCP.

If your speeds are slow on VDSL DLM is not your saviour - moving your house closer to the exchange/cabinet will however likely help.


Like the post here?

Duping it for Telecom and adding the Technicolor telnet info may help though.

Regardless, people still won't read and/or search and will keep asking the same questions.





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  Reply # 872882 6-Aug-2013 20:47
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nitrotech: It would be good to sticky some info on DLM for everyone because the same questions come up again and again.

I started on DLM6 and got to DLM1 in a bit over 2 weeks.

During that time there was VERY little change in sync rate therefore speed.

The one thing that did change was the latency but only jumping from DLM2 to DLM1

The fact is that DLM will not dramatically improve your speed, but on DLM1 could improve your latency which offers some benefits for TCP.

If your speeds are slow on VDSL DLM is not your saviour - moving your house closer to the exchange/cabinet will however likely help.


I assumed that much cheers.
All I know is that my sync speed has gone up from ADSL so happy enough with sync speed regardless of DLM.

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  Reply # 872897 6-Aug-2013 21:02
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stevenz:
nitrotech: It would be good to sticky some info on DLM for everyone because the same questions come up again and again.

I started on DLM6 and got to DLM1 in a bit over 2 weeks.

During that time there was VERY little change in sync rate therefore speed.

The one thing that did change was the latency but only jumping from DLM2 to DLM1

The fact is that DLM will not dramatically improve your speed, but on DLM1 could improve your latency which offers some benefits for TCP.

If your speeds are slow on VDSL DLM is not your saviour - moving your house closer to the exchange/cabinet will however likely help.


Like the post here?

Duping it for Telecom and adding the Technicolor telnet info may help though.

Regardless, people still won't read and/or search and will keep asking the same questions.



Yes ive been following that thread but you can see at 135 pages and counting that people think DLM will improve their speed and the same questions get asked again and again - also DLM timeframe seems quite variable - people want to fix their connection if not on DLM1 in 10 days.

I think this is a case of too much information being dangerous. I wonder how many calls telecom (and others) get about users not being on DLM1.

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  Reply # 872908 6-Aug-2013 21:31
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nitrotech: [snip]
Yes ive been following that thread but you can see at 135 pages and counting that people think DLM will improve their speed and the same questions get asked again and again - also DLM timeframe seems quite variable - people want to fix their connection if not on DLM1 in 10 days.

I think this is a case of too much information being dangerous. I wonder how many calls telecom (and others) get about users not being on DLM1.


The message they should be getting is that it's not a matter of 'fixing' their connection to get DLM1... It's an automated system that sets the most appropriate profile for the line. Sometimes most appropriate will NOT be highest performance.

Trust me, even with the early adopters, most users don't have a clue what DLM1 is or the difference to DLM2 or 6 or whatever.

It's nice when you get on the low interleaving profile, but everyone (even Geekzone users) just have to accept it's something you have very little control over - so it may be of interest, but that's about all.

Cheers - N


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  Reply # 872911 6-Aug-2013 21:40
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Someone should make an Telecom VDSL Performance & Tuning only thread (the telecom modems) and the Snap VDSL thread should be for Fritzbox's only.

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  Reply # 872914 6-Aug-2013 21:48
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mikenzb: Someone should make an Telecom VDSL Performance & Tuning only thread (the telecom modems) and the Snap VDSL thread should be for Fritzbox's only.


Point is that there is no tuning you can do - the speed will be what it will be - no amount of tuning is going to sort it.

As long as your attenuation is within spec then get on and enjoy the 'higher' speed life.

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  Reply # 873045 7-Aug-2013 10:50
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nitrotech:
mikenzb: Someone should make an Telecom VDSL Performance & Tuning only thread (the telecom modems) and the Snap VDSL thread should be for Fritzbox's only.


Point is that there is no tuning you can do - the speed will be what it will be - no amount of tuning is going to sort it.

As long as your attenuation is within spec then get on and enjoy the 'higher' speed life.


No... You're wrong here. Moving house closer to the cabinet or being in a UFB area will fix it :)

I completely agree with you here Nitrotech/Neil et al. It's of little interest what actual DLM profile you get put onto. It will be the profile that is most appropriate for your line and distance you have from the DSLAM.

There is no tuning you can do to improve it (and screwing around with the settings in your modem is only going to make things worse so don't do it).

The main (and only) piece of VDSL tuning has already been done when you got a Master Filter installed. There isn't anything else you can do apart from that.

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  Reply # 873048 7-Aug-2013 10:52
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Goodness, this is what I get for not paying closer attention to the forums. I completely missed the fact VDSL was available now. I'm booked to have mine installed next week. Does the fact that Telecom have sent me a Chorus appointment indicate they've already performed the required tests and decided my line is good enough? Or could I still be refused? I am around 600m from the cabinet, if you follow the line of the road, however the cabinet is at the end of another road that cuts behind the house, and if the cable runs that way, and under the reserve at the back, then it would be closer to 400m.




Geek girl. Freelance copywriter and editor at Unmistakable.co.nz.

 

Currently using: Modified 2008 Mac Pro, HP M6-1017TX Laptop, iPad Pro, iPhone 7, iPhone 6S, AppleTV4.


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  Reply # 873050 7-Aug-2013 10:55
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littleheaven: Goodness, this is what I get for not paying closer attention to the forums. I completely missed the fact VDSL was available now. I'm booked to have mine installed next week. Does the fact that Telecom have sent me a Chorus appointment indicate they've already performed the required tests and decided my line is good enough? Or could I still be refused? I am around 600m from the cabinet, if you follow the line of the road, however the cabinet is at the end of another road that cuts behind the house, and if the cable runs that way, and under the reserve at the back, then it would be closer to 400m.


Telecom would have done the prequal (pre qualification) based on your distance while you were talking with them on the phone and 400-600meters is right on the limit but you "should" be ok.

Typically the new and moves folks err on the side of "let's get it connected and see if they are ok" rather than the "lets not get it connected since they are right on the margins". I know of a few customers connected and they are around the 800-900meter mark.  They don't get 40/10, but it's still a vast improvement over ADSL2+ (Normally around the 20-30/6-7 or so).

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  Reply # 873089 7-Aug-2013 11:46
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Amosnz: I've been connected 5 days now, DLM is doing its thing.

Day 1:  DLM6
    Payload rate [Kbps]:                         42855          10354
    INP [DMT symbols]:                         2.00           2.00     
    Delay [ms]:                                8.00           8.00

Day 3: DLM4
    Payload rate [Kbps]:                         48282          10352
    INP [DMT symbols]:                         1.00           1.00     
    Delay [ms]:                                8.00           8.00

Day 5: DLM2
    Payload rate [Kbps]:                         49192          10352
    INP [DMT symbols]:                         0.00           0.50     
    Delay [ms]:                                8.00           8.00

Hopefully I'll move to DLM1 for the latency decrease, but without going to a 17a profile I've about tapped out this line.


Day 6: Back to DLM4
Payload rate [Kbps]:                         48402          10352   
INP [DMT symbols]:                         1.00           1.00     
Delay [ms]:                                8.00           8.00

Day 7: 17a Profile
Payload rate [Kbps]:                         64385          10352
INP [DMT symbols]:                         1.00           1.00     
Delay [ms]:                                8.00           8.00

Now I just need some way to actually use this speed IRL...





Speedtest

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  Reply # 873157 7-Aug-2013 12:51
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plambrechtsen:Telecom would have done the prequal (pre qualification) based on your distance while you were talking with them on the phone and 400-600meters is right on the limit but you "should" be ok.

Typically the new and moves folks err on the side of "let's get it connected and see if they are ok" rather than the "lets not get it connected since they are right on the margins". I know of a few customers connected and they are around the 800-900meter mark.  They don't get 40/10, but it's still a vast improvement over ADSL2+ (Normally around the 20-30/6-7 or so).


Awesome, thank you for the info. If I can get better than 20/5, I'll be pretty happy. It's not like it's costing me a heck of a lot more on my monthly bill, so even modest improvements are acceptable. Now I can stop shouting angrily at the TV every time the UFB adverts come on - my street isn't even on the schedule yet.




Geek girl. Freelance copywriter and editor at Unmistakable.co.nz.

 

Currently using: Modified 2008 Mac Pro, HP M6-1017TX Laptop, iPad Pro, iPhone 7, iPhone 6S, AppleTV4.


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  Reply # 873193 7-Aug-2013 13:52
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http://www.geekzone.co.nz/forums.asp?forumid=90&topicid=105744

I recommend that thread for DLM im on the low end speed scale of vdsl2 like alot of others in this thread and its helped me out.... 150 pages worth the read and will help much.

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  Reply # 873219 7-Aug-2013 14:26
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AppleJackXD: http://www.geekzone.co.nz/forums.asp?forumid=90&topicid=105744

I recommend that thread for DLM im on the low end speed scale of vdsl2 like alot of others in this thread and its helped me out.... 150 pages worth the read and will help much.


Thank you, I shall have plenty of time to brush up on it between now and next Tuesday when the Chorus tech is due to arrive :)




Geek girl. Freelance copywriter and editor at Unmistakable.co.nz.

 

Currently using: Modified 2008 Mac Pro, HP M6-1017TX Laptop, iPad Pro, iPhone 7, iPhone 6S, AppleTV4.


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  Reply # 873225 7-Aug-2013 14:31
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Just thinking ahead to when my first VDSL outage occurs, has anyone had any success with 3G dongles working with the Technicolor TG589vn v2?

Telecom's site mentions a few, but the link incorrectly refers to the TG582n/TG797n at: http://help.telecom.co.nz/app/answers/detail/a_id/20047

I have a couple of MF636 dongles that don't work, but do work standalone.




Tivo upgrades to operate with the new OzTivo EPG, support and service. Over 300 performed here so far. See: www.hillcrest.net.nz


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